COLOWE 35 Machine Successfully Tested Carbon Black Masterbatch - A Small Twin-screw Extruder Opens A New Chapter in Cost-effective Carbon Black Masterbatch Granulation

1, The choice under the wind: why high cost-effective extruders are reshaping the granulation pattern of carbon black masterbatch

The EU Carbon Border Adjustment Mechanism (CBAM) and the new version of the Plastic Waste Directive are driving the supply chain towards low-carbon and traceable evolution. According to Smithers' "Carbon Black Masterbatch Market to 2029" white paper, the global carbon black masterbatch market has a compound annual growth rate of 4.7%, with a surge in demand for carbon black masterbatch granulation that relies on small and medium-sized batches and flexible production lines. For international startups who pursue environmental protection and explore new materials, there is no room for trial and error in a mixing line that can easily reach millions of dollars. The COLOWE 35 small twin-screw extruder, with its high cost-effectiveness extruder logic of "entry-level, high-end configuration", greatly reduces the investment risk and energy consumption of carbon black masterbatch granulation, making rapid response to segmented markets within reach.

2, Dispersion is king: the key to the screw configuration of small twin-screw extruders for making carbon black masterbatch

The primary particle size of carbon black is only 20-50nm, with a large specific surface area and easy formation of stubborn aggregates, which is the quality bottleneck for carbon black masterbatch granulation. The COLOWE 35 small twin-screw extruder adopts a modular screw, flexibly configured with 30 °, 60 °, and 90 ° kneading blocks and toothed dispersing discs according to the concentration of carbon black, achieving a delicate balance between high shear and distribution mixing. In the sample, for the 45% carbon black filling formula, by locking the aspect ratio L/D=40 and introducing reverse threaded elements, the melt is repeatedly ground and repositioned in the threaded and kneading sections, and the carbon black aggregates are efficiently opened. The measured differential pressure of the filter screen (DIN EN 13900) remained stable at 0.3-0.5 bar/g, sufficient to produce film level uniformity, which intuitively verified the precision control ability of the small twin-screw extruder for dispersion.

3, Temperature control and volatilization: the "invisible high ground" that high cost-effective extruders must climb over

The intense shear heating caused by high filling during the granulation of carbon black masterbatch often leads to local melting temperature loss, resulting in carrier degradation and odor residue. The COLOWE 35 cost-effective extruder is equipped with multi-stage PID forced air cooling/thermal oil composite temperature control for the cylinder, which suppresses the fluctuation of melting temperature within ± 2 ℃. At the same time, dual vacuum devolatilization ports are installed in the melting and homogenization sections, with a vacuum degree of -0.09MPa, forcing small molecules and water to quickly escape. The measured VOC emissions from carbon black masterbatch were reduced by about 60% compared to the open process, meeting the VDA 277 automotive interior odor standard and RoHS requirements. This is the confidence that this small twin-screw extruder remains calm even in the face of strict international orders.

4, Sealing and energy consumption: defining the clean production paradigm for carbon black masterbatch granulation

The dispersion of carbon black dust is a serious problem in the industry. COLOWE provides a fully enclosed forced feeding and micro negative pressure dust collection system for this small twin-screw extruder, which controls the dust concentration in the work area below 0.1mg/m ³, far exceeding the OSHA limit. Thanks to the efficient pressure building and optimized shearing of screw components, the overall energy consumption of the line is only 0.22-0.25 kWh/kg, which is about 30% more energy-efficient than traditional mixing methods. Based on the trial production of carbon black masterbatch granulation using the COLOWE 35 machine, the power consumption per ton is about 220 degrees, demonstrating the hard core competitiveness of high cost-effective extruders in the era of green manufacturing.

5, One step granulation molding: dispelling concerns about mass production for first-time users

The COLOWE 35 small twin-screw extruder can quickly switch between water ring granulation, underwater cutting and other systems, truly realizing one-step granulation from powder to carbon black masterbatch particles, eliminating intermediate links such as cold grinding, and greatly shortening the process exploration period for first-time carbon black masterbatch granulation users. Whether you want to try making new materials or validate formulas, as long as you provide the raw materials, COLOWE can output a complete carbon black masterbatch granulation process package at its experimental center, helping you realize the potential of cost-effective extruders into qualified particles.

6, Key question and answer: COLOWE 35 machine carbon black masterbatch granulation deep explanation
Q1: What high carbon black content can a small twin-screw extruder achieve?

We have successfully produced 50% carbon black masterbatch on the COLOWE 35 machine. But to balance dispersion and screw wear, it is recommended to have a carbon black content of 40% -45% for mass production. In this range, small twin-screw extruders can achieve the optimal solution of uniformity and production capacity with high cost-effectiveness.

Q2: How to avoid trial and error during the initial granulation of carbon black masterbatch?

Nanjing Kelongwell provides raw material testing services. You send the material, and we use a 35 type small twin-screw extruder to provide actual measurement data, and solidify the complete set of carbon black masterbatch granulation parameters such as screw configuration, temperature curve, feeding speed, etc., allowing you to stand on a reliable process foundation from the sampling stage and bid farewell to blind exploration.

Q3: Can the lifespan of the screw withstand the production of high friction carbon black masterbatch?

The screw components of the COLOWE 35 machine are made of W6Mo5Cr4V2 high-speed steel, and the cylinder liner is made of double alloy centrifugal casting. Processing materials containing carbon black has a lifespan of over 10000 hours and can replace worn components separately, greatly reducing the full cycle cost and fulfilling the long-term commitment of truly cost-effective extruders.

Q4: Can environmental compliance match EU and CBAM audits?

Absolutely. This small twin-screw extruder is equipped with closed-loop dust collection and dual vacuum devolatilization. The formed carbon black masterbatch has passed the migration test conducted by SGS according to EU 10/2011 and the VDA 278 atomization test, helping you pass the supply chain carbon audit with clean data of carbon black masterbatch granulation.

Q5: How many tons of 40% carbon black masterbatch does the 35 type cost-effective extruder produce per day?

Based on the granulation of 40% carbon black masterbatch, the recommended production capacity of this machine is 80-120kg/h, with a daily output of 1.5-2.5 tons, which is extremely suitable for new material sampling and small to medium batch production. Balancing production and stability in a small body is the design origin of the COLOWE high cost-effective extruder.

7, A pragmatic future for cost-effective carbon black masterbatch granulation together

The high concentration carbon black masterbatch successfully tested by the COLOWE 35 machine declares that small twin-screw extruders have long departed from the stereotype of "only being able to do filling". It meets the essential requirements of carbon black masterbatch granulation with precise temperature control, powerful dispersion, and environmentally friendly sealing design of a cost-effective extruder. When you first enter this market with abundant demand but full of process barriers, Nanjing Kelongwell Chemical Machinery Co., Ltd. is willing to use mature equipment platforms and transparent sample data to fold the environmental vision, cost bottom line, and product quality into every shiny black carbon black masterbatch with you.